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Title: Visible emission studies of melt-grown Dy-doped CsPbCl 3 and KPb 2 Cl 5 crystals

We report results of the optical properties of Dy-doped CsPbCl3and KPb2Cl5bulk crystals for potential applications in yellow solid-state laser development. The crystals were synthesized from purified starting materials and melt-grown by vertical Bridgman technique. Optical transmission measurements revealed characteristic absorption bands from intra-4f transitions of Dy3+ions. Direct optical excitation at 455 nm (6H15/24I15/2) resulted in dominant yellow emission bands at ∼575 nm from the4F9/2excited state of Dy3+ions. In addition, both crystals exhibited weaker emission lines in the blue (∼483 nm) and red (∼670 nm) regions. The peak emission-cross sections for the yellow transition (4F9/26H13/2) were determined to be ∼0.22 × 10−20cm2for Dy: CsPbCl3peak = 576.5 nm) and ∼0.59 × 10−20cm2for Dy: KPb2Cl5peak = 574.5 nm). The spectral properties and decay dynamics of the4F9/2excited state were evaluated within the Judd-Ofelt theory to predict total radiative decay rates, branching ratios, and emission quantum efficiencies.

 
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NSF-PAR ID:
10178953
Author(s) / Creator(s):
; ; ; ; ;
Publisher / Repository:
Optical Society of America
Date Published:
Journal Name:
Optical Materials Express
Volume:
10
Issue:
8
ISSN:
2159-3930
Page Range / eLocation ID:
Article No. 2011
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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